Luting composition



April 4, 1944. c. L. HART'SE LL ETAL LUTING COMPOSITION Filed Nov. 25, 1940 2 Sheets-Sheet 1 11 1 INVENTORS CTaade L. vfarE eZZ April 1944- c. HARTSELL ETAL 45,598

LUTING COMPOSITION Filed Nov. 25, 1940 2 Sheets-Sheet 2 INVENTORS ZJIG d W ATTORNEYS Patented Apr. 4, 1944 PATENT OFF-ICE 2,345,598 LUTING COMPOSITION Claude L. Hartsell and Alfred D. Covert,

' Detroit, Mich.

Application November 25, 1940, Serial No. 367,042 1 Claim. (01. 106-282) This invention relates to building construction and has particularly to do with a means for and method of forming a waterproof joint.

An object of the present invention is to provide a material for 'use in the joints in buildings of the type which are commonly called expansion joints. The invention also relates to a method of forming expansion joints. Another object of the invention is to provide a novel expansion joint for the mounting of glass blocks which are now commonly used in building construction.

A further object of the invention is the provision of an article for forming expansion joints which may be readily shipped and easily applied by an unskilled laborer. In the past, expansion joints have been developed which consist of a substantially rigid frame with cut-away portions for receiving gasket material. This frame is placed between two members of and used as an expansion joint for these members.

I, The present invention contemplates doing away with the necessity for any such frame and also construction of 5 a structure Fig. 3 is a section taken on the lines 3-3 of Fi 2.

Fig. 4 illustrates the method of forming an expansion joint for glass blocks.

Figs..5 and 6 illustrate details of the joint shown in Fig. 4.

Fig. 7 shows the manner in which the expansion joint material may be formed.

As illustrated in the drawings, the material to be used in the expansion joint of the present invention consists of a running strip of plastic which may be formed in various shapes and diameters but which is adapted to be stored on spools or in long strips after its formation. Previous caulkingmaterials have been formulated of plastic materiab but these have been subject to the criticism that they "skin over" after short exposure to the weather. The present invention contemplates a plastic for use in the manufacture of an expansion joint material and in the forming of an expansion joint which does not skin over" and, consequently, which may be used a Y considerable time after its formation at a manufacturing plant.

obviating the necessity for the use of a caulking gun when expansion joints are being formed. With the above old type of joint it was necessary either to apply the plastic material to the frame with a caulking gun just prior to its use or to apply it at a manufacturing plant and then seal the frame and the plastic material to prevent its drying out. The present invention contemplates a material for use in expansion joints which may be manufactured at one point and shipped to another point ready for use without danger of the material drying out and being rendered useless. Another object of the invention has to do with the formation of a caulking material which is internally reinforced .to prevent disintegration. Other objects and features of the invention having to do with details of application of the material and also of the formation of the material, will be brought out in the following description and cla Several illustrations of the application of the invention and also the method of forming the material have been presented in the drawings: Fig. 1 illustrates a perspective view of a sill joint showing the manner in which the joint is formed and also illustrating a means for holding the material.

Fig. 2 is an illustration of a window-in which the expansion joint may be used for the sill member and for the window frame.

A preferred formula for this material is as follows:

Approximately pigment Approximately V vehicle The pigment is to consist of approximately asbestine and 3 asbestos. The vehicle is to consist of approximately castor oil and soya oil.

Another material which has proven suitable for the purposes set forth, consists of a plastie formed from approximately asbestos and blown asphalt, the asphalt being mixed with a small quantity of mineral spirits and the ingredients mixed at a temperature from to 200 F.

A third preferred formula consists of a mixture of approximately asbestos and pitch, this pitch resulting from the distillation of an animal or vegetable matter. Preferably, the vehicle should consist of a semior non-drying oil or mixture of the same stiffened with a suitable amount of pigment.

The above material, mixed as described, will form a plastic material having considerable body strips and shipped in boxes or it may be rolled on cores, as shown in Fig. 1, where a continuous strip of material In is rolled on a core II. The spool of material is then wrapped and shipped.

At the job the material is used to form an eX- pansion joint by first locating one member 12 of the joint, Fig. 1, and passing a longitudinally extending material around the outer margins of the surface of the stone to be joined as shown by portions l3, M, l5, l6 and H. The material may then be broken or cut off at a point la. The material is preferably provided with enough tackiness to hold itself in the position on the surface on which is is placed even though the surface is vertical. The abutting stone (not shown) is moved into place and pressed against the expan sion joint material. This pressing movement is preferably continued to the point where the expansion material in will be pressed substantially to the surface or the outside of the joint between the two members, thus obviating the necessity for pointing or caulking of the joint. With the material passed around the outside edges, as described, it will form a seal for the joint which will be weatherproof.

In Figs. 2 and 3 the material has been shown used in connection with a casement window. The material is shown at 2B pressed between a sill stone 2i and the lower frame member of a casement 22 In Figs. 4,-5 and 6 a novel method of constructing an expansion joint for glass blocks is shown. It will be understood that ordinarily suitable mortar used between glass blocks but unless some type of expansion joint is provided between the glass blocks and the building in which they are located, any shifting or distortion of the building wi l cause fractures of the blocks. It is necessary, therefore, to provide a proper joint between the blocks and the building. In the formation of the expansion joints for the glass blocks, two parallel strips 25 and 26 are arranged along a building surface 21, as shown in Fig. 4. Since the usual mortar for these glass blocks is a material which hardens, it is extremely desirable that it be kept away from the joint between the blocks in the building. Consequently, the present invention contemplates the use of a guard member shown at 2B in Fig. 5 and dotted into the illustration of Fig. 4. This has been dotted in Fig. 4 to avoid the necessity of cutting then off part of a view. The guard member 28 may be formed of paper or cardboard and is arranged along the joint to between the parallel expansion joint strips and 26. As shown in Fig. 6, when the glass blocks are in place, the strips 25 and 26 are pressed into a flattened shape. The guard member 28 will then be sealed against the block. If the guard member 28 extends above the block in each tier of blocks, it will prevent the mortar which is used between the blocks from getting into the space indicated at 29 in Fig. 6. With the joint as provided in Fig. 6, it will be seen that the material 25 will permit a certain amount of, relative movement between the blocks 30 and the wall member 3| so that there will be no fracture forces on the blocks in case of any settling or shifting of the building.

Referring to Fig. '7, a nozzle has been shown at which may be used in the extruding ofthe expansion joint material. This nozzle tapers toward the exit aperture 36 and may be used with or without a tube 31 which extends transversely into the nozzle and is curved around as at 38 to present an opening which points toward the opening of the nozzle. This tube 31 is provided for the feeding of a reinforcing member 39 into the extruded material, this member consisting of some kind of a cord or fibrous continuous material. The location of the tube 31 is quite important. It is desirable that it be located at a substantial distance from the end of the nozzle and at a point where the nozzle is still tapering. As the material 40 passes the tube 39, it will necessarily have to open but since the tube 35 is still tapering, the material will be closed in as it passes the exit portion 36 of the tube 31 so that the final extruded material will have no openings.

We. claim:

A strip to be used in building construction to form waterproof joints which comprises a plastic material formed in a continuous, bendable and flexible, strip of predetermined cord-like or rope-like cross section and diameter, material for said strip comprising a plastic compressible substance formed from approximately blown asphalt and approximately asbestos by weight.

CLAUDE L. HARTSELL. ALFRED D. COVERT.

avoid the scattering of mortar 

